I don't know anything about Verve - so I can't offer any opnion other than to say that $99 for a pair of congas and a stand is so inexpensive that one must assume they can't be too good - although the price is low enough that you can't go too wrong. The stands look like they could be a little weak - but $99 (I did not look at the shipping costs) for a pair of congas may be worth the risk. LP and Toca are the most well know manufacturers, but there are several other companies as well.
I have not priced congas in a long time, but I'm guessing entry lever congas (with a 10" and 11" drum) can be found new in the $130 to $150 range. So $99 for the Verve may be a fair price - but for a few more dollars you could find something a a local music store that you could actually see and try.
What to look for in congas? Well if you plan to buy on line you can't look for anything. In general, wood congas have a warmer more "authentic" sound but less projection. Fiberglass have a brighter sound which can cut through a mix, but the tone is not as warm. Different woods and the thickness of the wood define the tone and account for differences in price. Fiberglass tends to be less costly than wood and again the design of the fiberglass accounts for differences in tone and cost. Naturally, the quality of the hardware (rims, tuning claws, stands, etc.) also account for quality of sound, ability to tune and price.
The type of head also makes a difference in sound and cost with everything from low cost synthetics, to more complex synthetics to actual hide.
Things to look for (if buying used) condition of the heads, cracks in the shell,
tuning (are the threads worn) and general condition. As a rule a thumb, if a drums looks in good shape it probably is in good shape - if it is beat up, the player did not respect the drum and there may be abuse concerns.
Only you know what you want/need. If you are playing for free, then prehaps your needs are not the same as if you are playing high level paying gigs. The Verve - or entry level LP or Toca may be all you need.
Hope that helps.
