I used $50-$100 bits. However, in the past my needs for this project have been modest, so I ordered this 4-bit kit for less than $30. I don't expect the durability to be that high, but the drills cut very cleanly and very quickly (in oak) and after more than 6 meters of cut they are cutting as well as when they started. In production, other bits may be preferred (plus 1/2" shank), but for the hobbyist, they turned out to be much better than expected.
Ultimate Guide to KOWOOD Router Pieces for Woodwork Beginners
11 Review
Enhance Woodworking Precision with Roundover Milling Rounding Edge Forming Tool
11 Review
High-Performance Whiteside Router Bits UD2102 Compression for Precise Woodworking
10 Review
Multitool pliers GANZO G202 black
12 Review