
BASS is free for non-commercial use. If you are a non-commercial entity (eg. an individual) and you are not making any money from your product (through sales, advertising, etc), then you can use BASS in it for free. Otherwise, one of the following licences will be required.
purchase

Shareware licence: 125
The "shareware" licence allows the usage of BASS in an unlimited number of your shareware ("try before you buy") products, which must sell for no more than 40 each. Non-shareware products are also permitted, but the product price limit is 10 in that case. The price limit can be raised by purchasing duplicate licences (for the same platform), eg. 2 licences doubles it. If you are an individual (not a corporation) making and selling your own software, this is the licence for you.
purchase	Single Commercial licence: 950
iOS or Android platform special: 475
The "single commercial" licence allows the usage of BASS in one commercial product.
purchase	Unlimited Commercial licence: 3450
The "unlimited commercial" licence allows the usage of BASS in an unlimited number of your commercial products. This licence applies to a single site/location at which products are being developed with BASS.
note that all prices are quoted in Euros, but payment can also be made in several other currencies
These licences are on a per-platform basis. There is a 40% reduction on each additional platform (excluding the iOS/Android Single Commercial specials), eg. Win32 and OSX Shareware licences would cost 200 (125+75) instead of 250.
In all cases there are no royalties to pay and you can use future BASS updates without further cost. Reselling/sublicensing is not permitted. Your products must be end-user products, eg. not components used by other products. Please note that these licences only cover your own software, not the publishing of other's software. If you have got any questions, please get in touch.