I'm sure this has been thought of many times but why don't the companies of quality products sell products in tamper free bottles/pots (especially liquids and powders) to avoid the problem of certain people buying these and refilling with 'cheap fake products' or 'filling with used monomer' as I read could be happening in Sams post in Scratch...I guess it must be a case of cost but it's a shame. Yes these people could still 'seal' the products themselves but it would be easy to spot fake from original so surely it would stop a lot of it happening? Just a thought 
