If you want to get into "partial" DIY (and not mixing from scratch) you can always do what I do at the moment.
Buy a flavour you know you like in the highest mg available.
I normally vape 18mg so bought a bottle of 36mg as it`s the same price as the rest of the nic levels anyway (go figure,nic is the most expensive ingredient yet most suppliers offer you the same flavour in 12/18/24/36mg at the same price

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Buy a small bottle of PG and or VG and one or two small bottles of flavour.
Cut the "base flavour" (36mg ) with the PG/VG and add flavour to suit.
I buy 100ml of 36mg Flue-cured and make up smaller bottles with various flavours mixed with the Flue-cured base using (example) 5ml of 36mg Flue-cured, 2.5ml of VG, 2.3ml of PG and Honey or Apple flavours.
The 100ml 36mg Flue-cured cost me £15, PG £3.99 for 100ml, VG £1.26 for 200ml! and a flavour costs £3.65 for 10ml but is only used at 2-5% so goes a long way.
Total cost £23.90 for 200ml of 18mg e-liquid plus enough PG/VG and flavour to do it again
Next time it would only work out at £15 for 200ml of 18mg as I already have the PG/VG and flavour. Ok you have to have a tobacco (or whatever flavour you bought) based flavour but personally I like tobacco based flavours and I found the Flue-cured mild enough to make a good base mixer without overpowering the added highlights
