"How much for a key?" always starts with "what kind of key?" Car keys come in several types, and the type decides both the price and how it's made. Here's the plain-English rundown.
Basic / non-transponder key
A plain metal key with no chip — found on older vehicles. The cheapest to copy, since it only needs cutting, no programming.
Transponder (chip) key
Looks like a normal key but has a chip in the head that the car's immobilizer must recognize to start. Needs cutting and programming — more in what is a transponder key. See transponder key replacement.
Remote & flip keys
A transponder key combined with lock/unlock (and sometimes trunk or panic) buttons. A flip key folds the blade into the fob. Both need cutting plus programming of the chip and the remote. See key fob replacement.
Push-to-start smart keys
Keyless proximity fobs — you keep the fob in your pocket and start the car with a button. They're the most advanced and the priciest to replace and program. See push-to-start replacement.
Which one do you have?
Quick tip: if you physically insert and turn a key, it's likely transponder or remote-head; if you press a button to start, it's a smart key. Either way, tell me your year, make and model and I'll know exactly — and what it costs (see the cost guide).
I make and program every type on-site across the Sarasota area. Call or text me at the number above.