actually, when buying a new dhol, it should never be painted. Lacquered ok. but not painted. becos you can still see the dhol wood with lacquer to check for cracks etc. Basically the wood needs a protective coating to prevent it from drying. So what i do is when i get a dhol that is lacquered, i strip off the bass, rope, treble and all and sand the dhol. Strip the lacquer off and sand the wood and coat with a couple of coats (5 coats on the outside and 2 inside, once every 2 hours) of Linseed oil (which you can get in Brash basah) leave it to dry for a few days. Thats the best.
Also when buying a new dhol, the most important thing would be to check the inside. Take off the treble and check the inside for cracks or wood fillers.
also, my personal opinion, nvr get a dhol from websites and get it shipped without physically going down to look at it. Retailers can promise you the world but eventually, what you see/hear is not wat you get. If you have the opportunity, get one personally from India or ask a relative get one from you.
Otherwise, ask around the people who already play the dhol and see if they have any to sell.
My 2 cents for those wanting to buy a dhol.