Buying small amounts of IOTA

Are there ways to buy amounts worth less than 5 Euro? I can think of kraken and binance having minimum buy orders of roughly 10€.

I’m planning on creating a service that lets you buy data for a small amount of iota which is competing with existing services that offer the same data with a subscription model for 5€ a month. Ideally my customers should not need to buy more than 5€ worth of IOTA.