Looks like a concert tom Londoner 7 set. Script badges means real Rogers, not imports. Likely a Dyna on the snare, so check if it has the rail still. If so, it would be worth $300+ USD if in decent shape. Even a Powertone is worth $150-200 depending on condition. Swivo stands worth couple of hundred $ as well. $700 looks like a good deal with just this info. Always try to work the price if it feels right.
White drums are not the most prized, so you could work on replacing the toms over time if you keep an eye out, and sell the others as you replace them. Still could be a good deal if it's worth the time and effort to you.
Good luck.