They are the 2 channel, 1GHz model .. and have been fitted with no options. There are hardware slots on the rear to add MSO functionality. The only accessories included are a pair of 500MHz passive probes.
In this case they aren't worth a huge amount, but people will likely bid crazy on them anyway.
You can get a high definition (12bit) 100M point 4 channel Keysight DSO9104H for US$6600 on ebay
That's 10 times the memory, much higher resolution, and two extra channels than the R&S, so I'd price them at maybe $5k tops.