my vision isn't "horrible"....so i just go sans glasses and do the best i can. It does make it a bit hard to tell how big the swells are. I fairly often mistake something small for something bigger and vice versa -- its really hard to tell until the swell is about 10ft from me.
$19.99 I have used these for swimming in the past and they work fine. You just need to know what strength to get. If you don't know you can call your eye doc. The only problem is, if one eye is worse than the other you can only get them in the same strength, unless you buy two and split them.
I wear contacts in the water. I just had my eyes examined and the Doc yelled at me and told me not to do that.