You could buy a kit from Brownells and do it yourself. There are instructions included in their excellent kits.
I would also watch the various sniper sites and other hunting sites for HS stocks for sale, you could save a bit of money there. Maybe e-Bay also. Surprising how many stocks are sold via the internet.
Accuracy gains are questionable - many rifles shoot great in HS stocks with little to no bedding. Winchester puts a dab of bedding compound in the recoil lug recess and around the tang screw hole, and their rifles shoot well. That is bare minimum but it works, more elaborate bedding involves the entire action area.
A friend does a superb job of bedding these stocks but it takes a couple of days and a lot of painstaking work. He does the entire action one day, then the floorplate assembly the next day. When the rifles are finished they make a different sound when you dry fire - metal to metal fit is perfect.
I have had rifles shift slightly in HS stocks to the point that the barrel was not centered. Bedding will ensure that the receiver and barrel stay put, plus the tighter fit should enhance accuracy.