are these sentences correct? pls help

[Unregistered]

Do you prefer to make payment for your purchases by using the self checkout system or through cashier?

[Jaskin]

Hello,

Please note I'm not a teacher; but let me have a go.
Do you prefer to make payment for your purchases by using the self checkout system or through a cashier?
I'd say :

Do you prefer to pay using the self-checkout system or to a cashier ?
or
Do you prefer to pay at a self-checkout or to a cashier?

Cheers

[~~Dua~~]

i don't think anything is wrong with this sentence

[paulmoss]

I'd go for Jaskin's phrase. This sentence is not wrong but is definitely unidiomatic: when u use the language in context there is no need to say things people already know: at a supermarket you obviously pay for ur purchases not anything else!

[IvanV]

I'd go for Jaskin's phrase. This sentence is not wrong but is definitely unidiomatic: when u you use the language in context there is no need to say things people already know: at a supermarket you obviously pay for ur your purchases not anything else!

Words should be written in full.

[safawi]

Hello! Here the correction:

Do you prefer to pay for your purchases using the self-checkout system or go through the cashier?

[IvanV]

I'd keep it simple:
Do you prefer self-checkout or manned registers?

I also dislike that pay for purchase part. It may be common, but I find it redundant.

[Speedwell]

Hello! Here the correction:

Do you prefer to pay for your purchases using the self-checkout system or go through the cashier?

That isn't correct. Your first sentence, in the first place, should read, "Here is the correction."

The second sentence, the one you "corrected," is not parallel. It could read, "Do you prefer to pay for your purchases with the self-checkout system or through the cashier?" In my example, "with the ... system" is a prepositional phrase, and so is "through the cashier." If you insist on using forms of the verb "use" and "go," then it should read, "Do you prefer to use the self-checkout system to pay for your purchases, or to go through the cashier?