i started out with only one package and never bought any more. they skipped from the start. i do much better on ebay even when it's a no-name blade and with shipping.
i bid for a package of 100 blades in a plain ziploc bag for $140.00 + $12.00 shipping. they came separated by small squares of oiled paper. satisfaction guaranteed.
i love them. they are truly sharp. i know that's a lot to lay out at one time, but i end up spending more in the long run otherwise.
so they ended up costing about $1.50 each. i'm satisfied with the price and definitely with the quality. i always check first with ebay.