I'm selling my kids outgrown clothes on vinted and I usually buy their new stuff there too. I usually favourite a few bits to watch for price changes or to put everything I like in one place.
When people favourite any of my listings, I usually make them an offer, taking off, for example, £1.
I was reading elsewhere about how people find it an intrusion/inconvenient etc to be made an offer. This seems strange to me because if it's something I like enough to have favourited it, I'd love a bit of money off 
AIBU to be making offers to people who favourite my items for sale?