I want to build up trust here. And I thought of an idea others would benefit.

Trust trade me items (i.e. sets of items, items for extended use/use with lend-lends) for a set amount of time, and I'll pay you back.

And I want to make this gradual.

Low items first, when trust is gained high items will come, and then when I have the items bought myself, or I seem to have enough vouches/have gotten to the high-value vouches, I will stop.