ok going to toss my

in here, i agree and disagree on a number of things...
the #1 profit for the majority of any b&m is going to be e-liquid, hands down. the price of the e-liquid should be reasonable, however it should still remain semi competitive. there are two reasons i feel this way
the first being i stand by the philosophy if its too good to be true, it probably is, if all the vendors in a local area are selling liquid at $1 a ml, and you have a vendor that shows up selling their liquid at half price, or less, reasonable pricing by most standards... (dislcaimer: this is assuming i have none of the knowledge in regards to mixing e-liquids and the cost of it) while i would want to try it, i would be skeptic of why its cheaper than everyone else, what corner did they cut, why is theirs cheaper, is it safe?
the second and lets be realistic if everyone is selling at $1 a ml and another business can sell my liquid at .75 a ml and pull their customers, and still get good sales, does it really make sense for the business to take an additional 25% cut to be reasonable? we live in a capitalist nation, lets face it, some things are just business...
some of the mark up on eGos, mods, apvs, tanks, etc is understandable, your average vaper is not going to have multiple devices, might have a couple of tanks, but in an extreme case a total of 2 set ups, 1 and a back up, maybe an additional tank or 2, so for the most part, those sales will come from new customers, not current customers...
not saying a huge mark up is ok... but a slight, yes... as far as retail suppliers go... the cost of these items wholesale is great, and this is just from my random searchings... it is not unreasonable for a 900mah battery to be close to the cost of one from an online retailer plus shipping... so say 21 for a 900mah passthrough from an online vendor with tax and shipping, it should reasonably cost 25-30 in a b&m and still be in the realm of reasonable... more than that, and that is just general greed...
i dont know that is just my opinion, i think a great feature that b&ms should have (that i plan to implement with mine) would be how to seminars hosted when the store is open, close to when the store is going to be closing... (which would be later than most stores are open) i mean what better way to get business than to teach people about say rebuilding coils... instead of watching youtube videos on it, charge 5 a person for the seminar and give them an amount so they can try and do it their, see if its worth it for them...
while this may take away business (loss customers purchases on replacement coils) if the b&m sells materials for rebuilding then... voila the b&m is more likely to have a steady customer in that aspect...
theres my thoughts on the subject, some mark up is acceptable, however it should be reasonable and competitive...