Why is there such a difference in the cost of virtual numbers for different vendors / providers? And who is the best place to buy them?

Question

SIP

we are talking about foreign (relative to Russia) virtual numbers. For example, +972 (Israel land)
we take a number, for example, from Zadarma: connection fee is 0 rubles. subscription 120/240 rub. calls to +972 (Israel land) 0.48 / 0.6 rubles / min
and take a number, for example, from Telphin: connection fee 900 rubles. subscription 900 rub. calls to +972 (Israel land) 0.9 rubles / min
and both give the settings for the trunk to their FreePBX (only the number and the trunk are needed)
due to what is such a difference? Or am I looking in the wrong place and not going to buy from those?

Answer 1

I don't know why there is such a difference.

Answer 2

that is, the difference is three times in the monthly fee, and twice in the cost of a minute is this a normal practice? :)
and as a connection there can be a difference?
Well, I don’t believe that in market conditions it is possible to work with such a difference in cost ...

Answer 3

Lots of nuances! The quality of communication, the number of connecting lines, etc. etc.!
Now current prices with excellent functionality can be found here:
www.phoneforbusiness.ru/gorodnomer.html