They are about 5 US dollars for a set of three. Nowadays there are synthetic grips which are much easier to grip than leather, thus possibly removing the need for overgrips. Overgrips can be fitted to provide more 'feel'. Tightly wind the overgrip diagonally up the replacement grip from the butt end. Secure it by overlapping the first wrap and taping it down at the end.
Grips feel types 'Feel' refers to the adhesive qualities of the grip.
There are three types. The choice for least friction, and consequently, the least likely to cause blisters. The tacky grip should provide you with the kind of friction you need to keep your racquet from going airborne on a 90-degree day. Congratulations, you've just reached the top of the adhesive chart. In fact, this feels a lot like flypaper, so it makes gripping the handle easier.