Interesting, looks like laws differ in subtle ways for these kind of agreements. For reference in the Netherlands any offer you make is legally binding, though

Interesting, looks like laws differ in subtle ways for these kind of agreements. For reference in the Netherlands any offer you make is legally binding, though the deal has to make at least some sense to both parties (as well as satisfy a few other conditions). A price of 1/5 ct would probably be considered too low to be sensible and would not be considered binding.