Since I don't have a lot of mark up on parts, parts prices aren't that important to me. Of course, I'll always spend a couple of minutes looking up the best price. But the customer is going to pay it anyhow. Unless it's just outragious. But they already know beforehand, about what the cost of the repairs & parts are gonna be, before I order anything.
I price match on parts.
There are 2 big on line dealers down here & I charge around 90% of what they list on line.
This is regardless of weather it is an original part or a pattern part so on some things I make a 100% mark up.
The logic behind this is if the customer checks the prices on line mine appear to be cheaper.
When I have to pay full retail I include the invoice with their account so they can see I did not add anything to the price but there is always a "Delivery Fee or Courier Fee " as the last line to cover the cost of going to the shop to get their parts and it is never ever a whole dollar amount so $ 14.75 , $ 22.52 etc and you tell then that is what the courier company charged you for delivery.
I use a price that will round the bill to an even 50¢ ad a lot of my prices end with numbers that are not multiples of 5¢ which is the smallest coin we have
As for tools they come from distributors bought on a company order & I ask for wholesale rates.
Most will give you one if you have the appropriate tax numbers ( down here an ACN or ABN ) and some have even asked me to distribute their products which I try to do if I think I can sell them.
I shifted 144 air dusters with a 5' tube over 3 years or 10 sump pumps or 144 grease guns as an example so those meant that my dusters, grease guns & sump pumps were effectively free.
Get lots of oil in retail packages in when Stens have their pre-season sales then put them where customers have to walk past and write a price on each bottle with a paint pen in big number so they can see it is for sale.
The oil I use in the shop I buy in 44's so it costs $ 3.95 / liter, I charge it out at $ 10.00 / liter and retail it in bottles at $ 11.00 / liter.
Same thing with grease, always bought in 5 gallon pails because the Tricor guns are refillable as well as being leak proof .
Shop fittings & other tools all come from auctions.
Sunday evening is auction time & I scour the 3 major trade auctions and put very low bids on things like tool boxes , loose tools , parts bins , peg board, etc etc etc.
Treat them as you would a garage sale, one low bid, if you win fine if you don't who cares so one bid then don't go back till after the auction closes.
Often a "pallet of used tools & sundries " will make me hundreds because I take out what I want then sell the rest at the gate as "surplus used tools "
Better still these are done in my name, cash only so they do not appear on the books.
The workshop has 6 rolling tool chests and I have not paid more than $ 50 a piece for any of them and sold another 1/2 dozen at well over $ 100 each .
Occasionally some one comments on them & they get an answer along the lines of " I was thinking of getting some nice new Sidchrome ones but I would have to put up my labour charges & the tools really don't care "
The other things about old looking tool chests is it makes it look like you have been around for a long time