The verdict
Let's Enhance's headline is 16x upscaling, which sounds excessive until you realize the actual use case: e-commerce product photos that need to land at print resolution from web-resolution source files. For that specific workflow, the high scale factor is exactly what the project needs. API access is the real-world value-add for users wiring upscaling into product catalog pipelines — most consumer upscalers don't expose that. The honest critique: credits-based pricing makes the marginal cost-per-image meaningful, so heavy users land on bigger subscriptions than the headline tier implies. For occasional use, a free alternative (Waifu2x, Upscayl) likely covers it. For e-commerce, marketing asset preparation, and any workflow with API integration, Let's Enhance is the right shape — pricing reflects the niche it owns. For artistic upscaling, alternatives have edges.