Trying to answer the last few questions that nobody else has:
Ludwig Rockers, in this case refers to the heads. There were several lines of Ludwig entry and midrange drums called Rockers in the 70s, 80s and 90s, but these are not those.
SR2s are factory refreshed Sabian cymbals that could have started out as anything (AA, HH, AAX, HHX) and now are unique one-off cymbals sold at a reduced price. They are a literal roll of the dice; sometimes you get something great and sometimes not so much.
Your pedal is a Ludwig 400 pedal, which was a line they had in the 90s and 2000s to pack with lower and mid-range kits. It's functional but not anything super special or collectable.
It's hard to tell what's going on with the tom mount on your smaller rack tom. I can see one of the mounting bolts lying around inside the tom. You'll need to take off one of the heads and try to bolt it back on from the inside. If you are missing one of the bolts, or they're broken, you can get functional replacements at any hardware store.
The snare drum is an inexpensive imported steel snare identical to millions that have been sold to students and beginners for decades. It has very low street value in and of itself ($25-50 depending on condition).
[EDIT:] The shells by themselves are in pretty decent shape, so judging by the prices being asked on Reverb, you could probably get at least $1500 for them as is; if you clean them up super nice and throw fresh heads on them, probably more than that. I would recommend selling the stands, snare, and cymbals separately if possible - the drums by themselves are desirable, but having to take it as a package deal might make it harder to sell. As I said above, the snare is worth no more than $50. The cymbals could maybe go for $200-250 all together. Each stand is probably worth about $50-60 apiece. The bass drum pedal is worth no more than $20.