Measure the distance between the high & low E strings(1st & 6th string) over at the pole piece area of the neck and bridge pickups. Both the slug side & the coil side. Check that with the pickup dimensions available for the regular & F-spaced from Dimarzio or BK or Duncan. It doesn't matter if the A,G,D,B strings are not lining up exactly at the center of the pole piece. It is a problem if the last outer strings are either off or at the very edge of the pole piece. In that case for the high 'e' string downstrokes will sound weaker compared to the upstrokes, and the reverse will happen with the low 'E' string.
In most cases you only need F-spacing for the bridge pickup if it has a Floyd/Trem equipped on it, and even then sometimes the strings may not line up exactly at the center of the poles. The neck is most of time regular spaced, but do measure & check to be on the safer side.
There is no increased price for a regular or F-spaced dimarzios or duncans, they sell for the same rate, only covered & coloured ones would cost differently here. Not sure on the BK's. Bajaao prices are weird, you are better off having someone carry one home for you for 45% less than buy from them right now.
For the price you are paying, may as well get the BKs since it's just 2k more. It's scatter wound by hand so there's that versus machine wound, in a way you get a custom pickup built for you if you go the BK route. But that 6k is way high a price for the Evo. Your relative or friend would be able to pick one up for half of that used on ebay in US or buy one new for about ~4.3k. It's a bad time to buy duncan or dimarzio pickups in India right now, it won't be long before the old stock goes empty & you end up paying the new prices for every one of them in the range of 6-8k. That's awful & sad really.
PRS SE[Soapbar,Semi Hollow], Fender Squier CV Strat, ESP LTD Viper 400, Laney[LH20 head, LC50Mk.II, LX65R], GS412IS(WGS ET65 loaded), Boss TU3, Dunlop ZW45 Wah, Boss GT10, Shure SM57, Sennheiser E614, L6 Pod Studio UX2, Abelton Live 8, Reaper, Seymour Duncan[SP90-1,SP90-2,SH10 bridge,SH4,SH PG1,SH55], DiMarzio[DP100,DP159,DP103]