So you'll be buying like 5~10 cards a year? if you'd estimate, how many other users in your area will do the same?
Yes, 5 - 10 in a year. I guess less than 5 other users, since BTCitcoin isn't that known here.How would you define small amount ? anything less than 10$? 20$? 50$? 100$? or???
This is something that differs from country to country but based on where I am, anything less than $50 should fall on that category.I think it's possible to implement both solutions. Also, how would you define a well-known or verified people? I can put up my linkedIn, and contact info if necessary, but since I'm just your everyday Joe, there won't be any person who knows my name.
Further steps beyond those would be needed so someone can verify if you or your company are real or not. A company address that others would be able to verify, can be a good start as well.Would you consider placing it in your iphone cover maybe 
it'll be a bit hard to put everything in small size card and leave a space for the design, will have to manage to do it somehow.
Not sure how much what I'm about to say adds to the cost but maybe have it as two to three page cards (like how brochures are, just in smaller sizes). it'll be a bit hard to put everything in small size card and leave a space for the design, will have to manage to do it somehow.