Buying Full Sets Of Coins

I purchased a full set of cents (1909 to 1942) for $100 a few years ago it was missing the 1909 S VDB snd 1914d but had everything else in circulated grades. Just the 1909 S, 1911s and 1931S were worth the price. That set coupled with a high end set (1917 to 1959) let me leapfrog the early Lincoln wheat dates. Combing both I had almost 2 complete sets. I still have the 1909S, 1924D and 1931S from the original set but sold off or gave away the rest. Buying the whole sets can be good, but there will awaits be compromises in quality. You might eventually upgrade the coins.