M.B.
Be sure you know comparable prices ahead of time.... my daughter was going to do that, but didn't have a car seat to trade in, but a friend had a 20% off coupon.
She found the car seat she wanted, but the price at BRU was so much higher, that she ultimately found the same car seat on Amazon at LESS than the final price after the 20% or 25% discount she would have gotten.... She does have Amazon Prime, so there was no shipping charge on it, though.
Good luck!