1990 Toyota Corolla Distributor

1990 Toyota Corolla Automatic 84000 miles

When my car broke down, the mechanic told me I needed a new distributor cap/rotor. I had them replaced. This did not do the trick, so the mechanic said I now needed an entire distributor. He said that his rebuilt distributor came without the cap/rotor. It seemed odd to me that I had just purchased a brand new distirbutor cap/rotor and now needed a distributor, but it came without those parts. The cap/rotor cost $118 (not including labor) and the rebuilt distributor (without cap/rotor and not including labor) cost $375.

Does it seem to you that I paid for the distributor cap/rotor twice? Don't all distributors automatically come with the cap/rotor?