I'm picking up my Ellis 1800 next week and the LWS I'm buying it from makes blades. They sell bi-metal variable pitch blades for this saw for $38. I forget the brand, but I think it was a good one.

Is this a fair price and how many different blades/pitches do I need to keep around? The majority of my cutting will be hot rolled steel, maybe 14ga square tubing to 2" solid hot rolled round bar.