That doesn't sound like respect to me. If there is a genuine reason you can't donate (e.g. you don't have and can't get a paypal account) then fair enough, but don't say you can't afford it because it is not lke he set a minimum amount and you can't be that short of cash if you can afford an N900. There are other valid reasons for not donating, but your attitude comes across as not truly respecting him or his work.