what should i expect to pay for lowering of my tf sedan executive ive done the interior and some other bits and peices but am now looking at lows but how low to go as i run 18's and also what brand and cost ?

http://http://i1382.photobucket.com/albums/ah258/qiktf98/007_zpsilivoq40.jpg

its in members machines under qiktf98 have a look and tell me what u think?

It depends whether you buy new shocks or not (it is recommended).
Springs are about $300
Installation and alignment should be another that much or more depending where you go.
And shocks are about $600.

On these forums the recommended package is Dobinson springs and Sachs shocks

If you want practicality still, then kings lows are about perfect, think they were about a 45 mm drop??
Go for super lows and the front will be scrapping out everywhere.

I found King springs and boge shocks/struts to be very good.

$600 sounds about right.

I was looking at $710 for a quote earlier this year with King SP's

Most places will give a price around that ball park. If your cash strapped, maybe look at used springs? I know they can be questionable, but a proper inspection should be fine.

Whatever price you choose, make sure the modifier will write you a receipt that says the modifications are legal, because if you ever happen to have a prang the other parties insurance companies will try to defect your vehicle so you have to pay - and if you ARE insured your own company might disown you if the car isn't legal.

I paid $220 for a set of brand new dobinsons 40mm drops and $200 for installation, however my rear shocks were gone so that was another $100 there.