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One price.
Everything included.

A single project fee. No retainers, no hidden costs, no hourly billing. You own everything we build — source code, credentials, and all. Small projects: 4 weeks. Medium projects: 12 weeks. Enterprise: custom.

Weeks, not months
Full IP transfer
Scope agreed upfront
Based in Germany
Idea Stage

Starter

MVP prototype for founders validating an idea

€5,000one-time
  • AI-powered MVP prototype (core feature set, defined scope)
  • Marketing landing page (conversion-optimised)
  • Google Ads setup (1 campaign, up to 5 ad groups)
  • CRM integration (HubSpot or equivalent)
  • Analytics & conversion tracking (GA4 + events)
  • Full source code + credentials handover
  • Full IP transfer upon final payment
  • 14-day post-launch support (bug fixes only)
4 weeks · defined scope agreed upfront

Best for: Pre-seed founders, solo operators

Most Popular

Growth

Full execution for early-stage companies

€12,000one-time
  • Everything in Starter
  • Full marketing funnel (up to 5 channels: SEO, paid, social, email, content)
  • Sales automation & CRM (pipeline + sequences)
  • Outbound email sequences (3-step cadence, copywritten)
  • Paid ads (Google + Microsoft Ads, 2 campaigns each)
  • AI content pipeline (blog, social, email templates)
  • Lead scoring system (rule-based or AI-assisted)
  • 30-day post-launch support (bugs + optimisations)
12 weeks · scope defined in project agreement

Best for: Seed-stage startups, SMEs

Enterprise

Scale

Enterprise AI systems & ongoing execution

Custom
  • Everything in Growth
  • Custom AI product development (scoped per brief)
  • End-to-end GTM strategy (positioning + channels)
  • Dedicated execution team (product, growth, sales)
  • Multi-channel marketing ops (managed)
  • Custom integrations & APIs (defined in agreement)
  • Ongoing retainer option (monthly, min. 3 months)
  • Priority support & SLA (response within 4 hours)
Let's discuss — timeline agreed in discovery call

Best for: Series A+, enterprise, scale-ups

All projects include: source code, documentation, credentials, and IP transfer upon full payment. Scope is agreed in writing before work commences. VAT may apply based on jurisdiction. See our Terms & Conditions and Refund Policy.

AI running costs go directly to you — at standard provider rates, with no markup

We don't bundle AI API costs into our project fee. You hold your own API keys and pay the provider directly — the same rates anyone else pays. This keeps your costs transparent, predictable, and fully under your control. Most projects run for a few euros per day at typical usage volumes.

No markup on AI costs
Your account, your keys
Predictable, visible usage
How it works

What's included in each plan

All plans include full IP transfer, source code, and documentation.

FeatureStarterGrowthScale
AI-powered MVP
Marketing landing page
Google Ads setup1 campaign5 campaignsCustom
CRM integration
Sales automation
Outbound sequences
AI content pipeline
Lead scoring
Custom AI product
Dedicated team
Post-launch support14 days30 daysOngoing
IP transfer
Money-back guarantee
Source code & docs

What clients need to provide

To deliver your project on time and to scope, we need certain access and resources from your side. Here is exactly what is required — and what we can help you set up if you don't have it yet.

Accounts & Platform Access

  • Backend services

    Supabase or equivalent database/auth provider (we can guide setup if needed)

  • Google account

    For Analytics (GA4), Tag Manager, and Google Ads access

  • Advertising platforms

    Google Ads and/or Microsoft Bing Ads accounts for paid campaigns

  • Calendar & booking tools

    For scheduling integrations (e.g. Calendly, Cal.com)

  • Third-party tools

    Any specific tools required for your project (CRM, email platform, etc.)

Don't have these yet? We can guide or assist with setup as part of the project.

AI Tools & Usage Costs

  • API & token costs

    All AI tool, API, and token usage costs are covered by the client

  • Third-party AI services

    Costs for any third-party AI integrations used in your project

  • Ongoing usage

    Post-launch AI usage costs are the client's responsibility

These costs are not included in project pricing. We will provide clear estimates before work begins.

Access & Collaboration

  • Timely access

    Access to required accounts must be provided at project kick-off

  • Responsive communication

    Feedback and approvals within agreed response windows

  • Delivery impact

    Delays in providing access or feedback may impact delivery timelines

We work best when clients are engaged. Clear communication ensures on-time delivery.

Not sure what you need?

Book a free discovery call. We will walk through your project requirements, clarify what access is needed, and give you a clear picture of what to expect — before any commitment.

Everything you need to know

Still have questions? We respond within 4 business hours.

Email us directly
Book a discovery call

Let's scope
your project.

A 30-minute call to understand your goals, define scope, and confirm a start date. No sales pressure — just a clear plan.

30 minutes

Focused, no fluff

Written scope

You receive a brief within 24h

Start within 48h

Sprint begins as soon as you confirm

Direct contact

info@ja-welt.com

Trusted by founders

NLSSVCBXFP

We went from a vague product idea to a live AI assistant in under a week. They shipped what they promised — no delays, no excuses.

Portrait of Markus Brandt, CEO

Markus Brandt

CEO

6-day launch