I bought 3 Coaster seats off Craigslist that were in great shape - so you may look used if you live near a decently sized metro area.
The cheapest leather seats I know of are the Seatcraft Argonaut at about $800 for a row of 3.
My recommendation would be to avoid anything bonded leather.
7.4.4 Theater Room: JVC-RS500, Silver Ticket AT 2.35:1 142”, Onkyo RZ830, Anthem PVA-7, Panasonic UB420, Apple TV 4K, JBL Studio 530’s, 4 - 15" DIY Sealed Subs
3.1 Living Room: Samsung 64” F8500 Plasma, Anthem MRX 300, Dynaudio Audience 52’s, Dynaudio Audience 122C, NHT SubOne, Roku Express (2019)