This is an impossible decision to make without seeing the stuff, some LBS's are into making money anyway they can, and tires pads at an LBS have huge markups compared to buying the same stuff online though with pads alone you wouldn't save enough to warranty having to pay for shipping.
Unfortunately you're an inexperienced rider, in time you will be able to tell what a worn tire and pads look like, right now you're at the mercy of the LBS so just do it. And while you're at it get a fresh set of tubes.
Also begin reading web sites and watching You Tube videos on how to fix a flat, buy a couple of high quality tire irons like Soma Steel Core (impossible to break), or Pedros in yellow (cheap but stronger than other all plastic levers), I like the Quik Stik (fast and won't break either) too; there is no reason on Earth to take a bike to an LBS to have them fix a flat, then take one of your old tubes (keep the old tubes you might be able to use one as a spare), put a hole into it and mount the tire, dismount it and patch and remount and air up, repeat this 10 times till you get a good working knowledge of how it's done, then put back in the new tube and throw away your test tube and remount the tire. Practice with your rear tire and not the front, because that's where most flats occur and that one is the more difficult one because of the mechanicals.
For beginners I recommend glue on patches because those will cover up any failure in tube preparation to accept a patch, however glueless patches made by Park or Specialized are bulletproof if you know how to prepare the tube, and their faster to apply with no worry of finding a dried glue tube when you have a flat; I would replace a glue tube once at the beginning of every season just to be safe.
If you're not remotely mechanically inclined then buy a set of Panaracer FlatAway liners (your LBS should be able to order these and install them at the time you have the tires and tubes replaced) and install those in your tires, this will prevent probably all the flats till the tire wears out. Inspect your tires after each ride and pick out or pull out anything stuck in the tire. ALSO while the LBS is at it have them check the rim strip.
It's always better to be on the safe side, so getting those things replaced regardless of what whoever says is a good idea. If you get a used bike from someone, replace those things from the beginning so that you know you're good for the next few hundred miles (or however long).
