New car dealerships used to, and many still utilize high pressure tactics in sales. Leases may be a little different as the comeback money on them are much higher. The dealer keeps the residual value on trade-ins and make the most money on re-sales. New car pricing is controlled from the parent corp and dealers make much less money on them with the exception of dealer incentives and reward programs for sale volume you and I don't see, ie, it doesn't trickle down to the sticker. As a matter of fact, if its a hot commodity item, you'll pay way above sticker if you are lucky enough to catch a dealer who as it and is willing to sell it to YOU. Lol...
So anyway, do not walk into a dealer unarmed... Know what you are looking for BEFORE you go to dealers, new or used. Know the vehicle, the options and pricing available. If used, check KBB.com, CL, etc., for pricing comparatives to keep them honest. Remember too, with used, the dealer will bandaid and polish them to cover over wear and other issues. New tires on a used car is never a good thing IMO. Likewise if it looks like a new coat of paint... Unfortunately, reading and people telling you cannot replace experience. If you find something you like, ask for the sale to be reserved until you have someone else look it over with you, new or used. Never, ever accept, the deal is good until you walk out the door! If that's the deal, then walk!
Good Luck!