First of all congrats for creating something and achieving some traction. However, on the valuation side I think the things are a bit different. The size is just too small to justify a higher multiple, because you have to maintain the product, invest in marketing, etc. Until at least 5-6k mrr the buyer would be at a net negative (either hire someone to maintain or do it themselves and in a lot of countries the mrr is enough for neither).

A strategic buyer might buy it for the potential, but also at that size they can likely copy it quickly and with a bit of marketing scale it up.