For a more modern chip, use TL071/TL081 general-purpose JFET opamp, costs $0.55-$0.61 in DIP.
(I haven't played with op-amps in years. Back in the 1990s, I tried to build a LIDAR, but I needed more expensive RF-type test gear than I could afford.)
On the other hand, a small double-layer circuit board can be as low as $5 nowadays.