How much should I sell this candy for at school? people were complaining about my

[YellowLime]

prices? I sold the small twix like this for $1.25 ( first it was a 1.50 then they were like i can just go to the vending machine)
http://www.google.com/imgres?um=1&hl=en&sa=N&biw=1024&bih=600&tbm=isch&tbnid=EjBjzHRJh3WDwM:&imgrefurl=http://www.smartbuys.ie/twix-128-p.asp&docid=7F16xWQl5fsWRM&imgurl=http://www.smartbuys.ie/ekmps/shops/darrenfarrell/images/twix-128-p.gif&w=271&h=247&ei=zhqfT9LgH8Le0QGDq-XkDg&zoom=1&iact=hc&vpx=334&vpy=172&dur=417&hovh=197&hovw=216&tx=107&ty=101&sig=117161760127966248213&page=1&tbnh=115&tbnw=123&start=0&ndsp=18&ved=1t:429,r:2,s:0,i:127

Snickers for 1.25
http://www.google.com/imgres?um=1&hl=en&biw=1024&bih=600&tbm=isch&tbnid=-hl6xGNiidJrbM:&imgrefurl=http://www.fanpop.com/spots/junk-food-girls/images/23274784/title/snickers-photo&docid=RDFaS4pNaWj8XM&imgurl=http://images4.fanpop.com/image/photos/23200000/Snickers-junk-food-girls-23274784-475-357.jpg&w=475&h=357&ei=NBufT9bPC6Tg0QHJ1ozzDg&zoom=1&iact=rc&dur=336&sig=117161760127966248213&page=1&tbnh=116&tbnw=192&start=0&ndsp=15&ved=1t:429,r:2,s:0,i:138&tx=104&ty=57

the small kit kat 1.25

http://www.google.com/imgres?um=1&hl=en&biw=1024&bih=600&tbm=isch&tbnid=y5qc0ml4GtYl5M:&imgrefurl=http://www.candycarton.com/candy/kit_kat_bar&docid=W4_mCu6g_DiuHM&imgurl=http://www.candycarton.com/images/productimages/kitkat.jpg&w=340&h=340&ei=XhufT9_jILC40QHDx6WaDw&zoom=1&iact=hc&vpx=80&vpy=261&dur=950&hovh=225&hovw=225&tx=139&ty=137&sig=117161760127966248213&page=1&tbnh=114&tbnw=109&start=0&ndsp=17&ved=1t:429,r:5,s:0,i:145

and eclispe gum for 1.25 but its like two gum packets together so its really double the gum you would get at the supermarket

http://www.google.com/imgres?um=1&hl=en&biw=1024&bih=600&tbm=isch&tbnid=2eGLyfaR7cNIeM:&imgrefurl=http://www.bloomingtonneeds.com/index.php%3Fmain_page%3Dproduct_info%26cPath%3D33_37%26products_id%3D303&docid=HO1DoYo-jMFYsM&imgurl=http://www.bloomingtonneeds.com/images/eclipse%252520gum%252520winterfrost.jpg&w=500&h=500&ei=sxufT_eGIMOT0QGLoPX-Dg&zoom=1&iact=hc&vpx=756&vpy=156&dur=1539&hovh=225&hovw=225&tx=142&ty=148&sig=117161760127966248213&page=1&tbnh=110&tbnw=111&start=0&ndsp=18&ved=1t:429,r:5,s:0,i:144


how much should I sell this for, should I keep the prices, change the prices of some? buy new candy? thankssssssssssssssssssssssss for your input