$550 for 4 wheels? what size? Not bad at all, did you get a tire package or planning to use your current tires?
Be sure to weigh them before you get them mounted if there's no tires on them.
Best way to tell is get a 20 lb dumbbell..... and hold the rim in the other hand, they should feel the same just hanging down with the stress on your shoulders.......if the tire weighs more you should feel more stress on your shoulder and the need to put more work on that side to hold up the wheel.
Let us know