I won't be doing that much edging since you can do an edge with an edger and then just maintain it with a weedwacker. With what I just said, how many do you think I should buy?
You say you wont be doing much edging because you'll maintain it with your trimmer, that's what everybody says. You'll probably find out like others that edging walkways and drive is a lot better and most of all faster done with the edger and most likely you'll be using it more than you think.
As far as how many blades you should buy and have on hand would depend on how good you are with the machine.
Keep in mind that doing what you're doing you need to save money anyway you can. Normally blades can run anywhere from $3.50 to 7 dollars each and more depending on what you buy. I buy my blades by the case, 50 to a case for $39.95 and they will last me a season, so I guess you can figure the price for each and I buy oil filters the same way. A one time investment saves me a ton not only in the blades but in gas and time savings not having to run to the dealer once a week.
