I believe they are available on amazon but for competitive prices do check out the bay as well. I would suggest that almost any blade works well in Variant once the blade 'agrees' to your beard and skin. Voskhod are least sharp for my beard but super comfortable and idiot proof for those 5 am shaves and I dial up variant all the way up to 5 and past for xtg, they are good for 2 shaves only. Feathers, easy does it for me but die early by 4 shaves. Blacks are smooth and sharp, gets me 4 really good ones. Polsilver are sharp and smooth and somehow manage very good 5-6 shaves.Heretic, I may go with your recommendations. Are both available on Amazon? Really appreciate your help. Great bunch of guys on this form very helpful.
If you don't want to commit to bulk buy you can try a sampler first off the sellers on bay.