Rods you are looking at about 80 quid secondhand, machining costs vary wildly from place to place but again its roughly in the 100 quid ballpark for griding all 9 journals on a crank.

When I did similar with my engine (spun a shell which is what seems to be a common failure on the YB) the total bill came to about 400 quid including a new oil pump, that was with no labour for the engien removal or the mechanical work though of course as I did that myself.