I'm a Frugaltarian, and sometimes I find myself with an extra $100, but rarely with an extra $150. If I could get free shipping on $100 or $110, I might order more often. When I order three books ~ $160 - $180, one of them is usually not yet published or in stock, so Mongoose or Studio 2 is paying for shipping twice. But if they offered free shipping on $100 in-stock only, I would probably own 4 more books now. Does anyone else have this dilemma?
To answer the original question: These provide the nostalgia I was looking for:
Core Rulebook
Central Supply Catalogue CSC (many needed equipment updates moving from 70's sci fi closer to now)
Behind the Claw (the future past re-retro-imagined, or is it the other way around)
Do you Prefer LBB4 or LBB5? Choose Mercenary or High Guard