got to agree w/
@Synphul using something that lets you build you own coil is better, you can control things better. You can use an advanced coil like a clapton or alien that may use more juice or slap in a simple micro coil that will use less juice. And its cheaper
a bag of cotton is like $10 or less depending and can last a year or 2 or more.
wire is cheap
i but premade SS clapton and vertabraid wire. costs about $0.70 a ft or less and you use a footish when making a set of dual coils. A set of coils rewicked every couple weeks has lasted me so far 2 months. SO thats maybe 2 or 3 bucks with the cotton for 2 months
of course then you can also DIY your juice which can make your juice costs 10 cents or less a ml. I vape 10-15ml a day so $1.00-$1.50 a day in juice
but different juices burn gunk up coil and cotton differently.
coils that i only use fruit flavor son last much longer then the coils and cotton i use my chocolate flavors or my cinnamon apple danish flavor. some things that are sweet or dark juices or tobaccos gunk up coils faster