I built an entire site making it meet the complete spec (with some esoteric tings, it's a non profit) in one day yesterday with Roocode and Claude 3.7 Sonnet. It cost about $30 in total (appreciate I could do it cheaper but was using anthropic api directly). It's amazing, it would have taken me a couple of weeks to get everything right. Getting it to do tests as part of the process and some sublte engineering to get it not to get stuck in loops and ignore files are a must. It's also fun using it in Architect mode and feeding it with Perplexity AI's deep research output as a series of prompt for ingestion into roocode.