Before purchasing the system from Base Motors, I searched for various TPMS systems available online. I selected one system from AliExpress and placed my order.
Wholesale Free Shipping! HOT SALE! TPMS( Tire Pressure Sensor System)! TPMS IS YOUR NECESSARY,T/T WESTUNION MONEYGRAM
Cost of this system was US$157.89 and free delivery. However, when I looked at payment options other than credit card, I got very frustrated. Western Union etc can make payment to "person" only and not adviseable for a company, as there would not be any safeguard against fraud. The cost of bank transfer for this amount was quoted as Rs. 4000 by a money changer in Blue Area, Islamabad. In addition, the relevant taxes have to be paid.
I searched on the net and found the Base Motors ad on OLX. I recommend the purchase due to good performance of their system in my car, and, in my case, good behaviour of a merchant is of paramount importance. I have not met Babar Saheb personally, but on telephonic contact, I found him to be a very nice person.
BTW ... I don't know which TPMS product you have referred to in your posting. As I searched on the net, there is another type available with a bolt-on sensor system ... this type of system would be very vulnerable, as the possibility of losing the sensors in very high
The payment was to be made to AliExpress' account in Citibank Singapore.
I do not use my credit card for online purchase due to rampant frauds.