Prices are different in the MSFS marketplace

I need to report what i suppose to be a bug. In-game marketplace prices here in Brazil are different between the MSFS versions. I bought it on steam and other friend is testing on game pass. When i compared my version (steam) with my friend (gamepass), we saw a major difference on prices (steam flight simulator marketplace add-ons are about three times more expensive than the ms store marketplace version).

Its not fair for us to buy in a platform that will give more expensive stuff, compared to other people that bought in other platforms besides steam, and worse, without knowing before. They will have cheaper add-ons in the same game/marketplace/platform(PC)?

Any other countries with this issue?