Originally Posted by Dan-W
Thanks for the good advice. I went to some golf shops but they only had new iron sets which were more than I currently wish to spend. So Im trying for second hand online
Given you're new to the game, avoid buying online. As @geauxforbroke said, you need to pay attention to the shafts. And, you don't get to test online clubs before you buy.
Also, I'm not sure what golf shops you're visiting, but Golfsmith and Golf Galaxy and regional company Golf Discount all have used irons available from trade-in. And, they often have the "recipe" of the club - swingweight and shaft flex - to better fit you. Make sure you go to an actual golf shop and not Sports Authority or Dick's.
As for new irons and cost, you can always split the difference and get a "legacy" model from the different manufacturers. Callaway has the RazrX-NG (new grooves), which is a reissue variation of the 2012 RazrX, with a Uniflex shaft. Also, TaylorMade has a variation on the Burner 2.0 irons (reissue). These legacy models target the sub-$400 price point - Calla and TM can offer the lower prices because the R&D expenses have already been covered, and they can shift the model to a durable, commodity-type iron.