Hey there Slab-Seeker,
You don't have to spend a fortune to get good sunglasses. All I ever buy is the "amber" colored glasses from Strike King at Wal-Mart. They sell for 9.99 but sometimes I see them on sale for 6.96. I like the amber better than the grey but thats just me. They are polorized and have side shields also.
Look at my post from yesterday titled "Good Weekend". I have a pair of them on.