wyndham is the biggest hotel chain, 7000 plus hotels and resorts...
and fees are varies by locations, newer resorts charge lot more, buy with a more matured resort, and use the points elsewhere. I paid 520 a year, for a small package of 105k points, which equal to 5$ per 1000 points, some resort get as low as 3.5$ per 1000 points, such as smoky mountain area.
but they do limited some premium services on resale points, such as VIP check in, discount point rates, and more advanced booking.