Greetings,
Search eBay for "Starrett 66".
I got several hits and many are new in the box.
The 0.0015" and 0.002" blades get damaged first on used sets.
Look carefully and you should find a set for under $20.00.
CAVEAT Starrett has outsourced many tools to Communist China. Ask the seller where the tool was made.
Cheers,
Dave