A lot of the nicer brew bars have pre-set taster sets/flights, but they usually have a pick your own group of 4-6. They are about an ounce-2oz, although some look like almost four at many places. I appreciate they clearly mark on their menu boards that some drafts are not available for flights (because of expense/rarity). I rarely ask for a "free" sample any more, and all I want is to smell it and wash a little on my tongue to see if is at all close to being something I will enjoy. Odd funky experiments in mashup beer styles will get me to ask for a taster. So, my pet peeve to stay on topic? That a fine craft bar doesn't have a set price for a single pour of whatever glass size they use in their flights, they can only do 4,5,6 sample glasses - whatever their deal is and I only want one and am willing to pay for it, especially if it is one of the large pours of 4 oz.