A while back I needed some 1N4148 and 1N4007 diodes, along with some very special IC's. for a project.
I finally found the IC's- not real cheap, and asked if they carried other semi- conductors.
The salesman said "Yes".
So I got a quote on the diodes in quantities of 10 ea.
Well they were what I thought expensive in small quantities.
I asked the price in 100 quantities. It was the same TOTAL!
Yes, I got 100 ea. of the diodes for the same price as 10 ea. of them.
So when ordering commonly used parts, always get a quote on larger quantities than you need. You can build up your stock of parts, often at no extra cost.
Another trick is for several folks to go and make a "Bulk Buy" on the parts.
Order 500-1000 of the item. Resistor & Capacitor prices drastically drop in large quantities.
Don't be afraid to ask the seller to "Wheel & Deal".
This often works best towards the end of the month, when they have to meet a sales quota and may be behind.