Reasonable = the lowest price you can get. :o)
I help lots of friends buy cars and trucks. My approach is this:
Decide exactly what you want, go in, take out a credit card for a deposit and offer invoice minus any incentives. If they refuse to sell at that price, ask for their best offer, advising them that you will be leaving to check other dealers (They probably will take invoice right then). If not, take that price with you and see if you can beat it. But I've always gotten invoice, including on my girlfriend's 2001 Camry purchased at a one-price dealer! This should be easy and fun.
I would double-check the invoice prices at
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or
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just to be sure.
By the way, have them take a printout of the prices with them, along with a calculator and several copies of a chart with three columns: Blanks for the item (base price, options, etc), retail and wholesale. As they go through the dealer's lot and see Camrys with different configurations, the chart will help them figure out the invoice price for any particular vehicle (dealers may not have the exact configuration they are looking for). They can compare the retail listed on the printouts with the retail prices on vehicle sticker (Maroney sticker), such to be sure they have apples and apples.
Good luck.