I guess it depends on what you get into. Somebody who doesn't much like compacts won't think a conquest of a dozen SE/30's is a big deal while others would drool over it. Some people might not consider anything you had to pay for a conquest, others might if it was a super deal, and some don't care about the money at all. Also depends on how hard the items are to find.
My best single conquest (all for free) was many years ago getting the following:
Q950, yellowed 160MB RAM
WGS950, brand new looking with a never opened A/UX software set.
A shelf full of boxed software for 68k
Large SCSI tower with MO drive and some 9GB video drives (also boxes of new MO media)
A couple Radius Rockets and misc Nubus cards
A local lawyer also gave me a bunch of stuff (over a few months period) including a Q950/Supermac 20" monitor, SE, stack of wallstreet parts I made into 5 machines, tons of boxed software, misc drives, an Xp2000+ PC, LC 550, SE/30 case, etc.
I hooked a guy up with somebody ditching a huge load of old macs and he sent me (free of charge) an SE/30 with ethernet and 128MB RAM out of that lot.
Heck finding a local 9600/350 for $15 or so was a good conquest for me, people don't like giving those up and shipping is expensive.
A guy who noticed I was looking for mac IIx's sent me a pair just for shipping, they needed recapped but the cases are in very nice condition and IIx's are probably the hardests mac II's to find (so are original II's that havn't been upgraded with IIfx boards).
And I would like to thank Cory5412 for shipping me an Amiga 3000 from a guy in AZ who was dumping equipment to move out of state a few years back, no way would I spend the going rate for one of those with a video card and ethernet.