I would think so.
I tend to price compact macs at about $50 each and you're getting 3 units. Do bear in mind that the machines are almost 30 years old. They may not be working, They will need to have their PRAM battery either replaced or taken out and the very least (for which you'll need a mac-cracker — a very long Torx screwdriver). If they don't start, offer the seller less than $100, you never know.
Also, if the two SEs are early SEs then they will only read 800K floppies. You will need an external (or internal, if you wish) SCSI drive with the System 6 or 7 on it so that you can boot it.
The floppy drive is also nice to have.