If u able to say.... havled ur shop, go for better reputation one i.e. MBE, approx. RM150K including licensing, training, setup etc.
If u merely become collection point... go find SPX talk

Except if say.... within 1-2km radius, there are no other courier/collection point, other sub brand might be okay, else u need something strong and wide support, MBE.

Many small ones, such as Parcel Hub, CollectCo, many many more, but like u say, they have limited courier partners, lack of reputation which ppl might worry on trustwortiness, etc.

Of coz, they have lower entry fees, but ur sales u need forecase urself ady... Also, ya, MBE might not guarantee sales also ya