I am guilty of also looking to sell these type of pop-up stands when we first got our solvent printer. we never bought any, but i often thought it was a product we were not offering.
i look on it as we are sign makers and this is more temp or exhibition work so our clients are similar but not the same.
contradicting myself here, we do sell a fair amount of roll-up stands and make decent money at it. but we dont get involved in the online cheap buying i often see. it sounds great when others speak to me and say "oh we sell that by the pallet load!" maybe so, but when your charging 1/4 of the price and including artwork, then that isnt impressive!
anyway, im babbling now sorry.