Can I show prices in my own local currency even if the supplier gives them in dollars?

Yes, in most cases you can show your customers prices in your own local currency even when the supplier quotes you in another one. The software takes the supplier price, converts it using the exchange rate you have set, and then applies your markup on top, so what your customer sees on screen is a clean price in the money they actually understand and pay with.

There are a few honest limits worth knowing before you set this up. The conversion happens on your side, so the rate you use is the rate you decide, and it will not follow the live market minute by minute unless your plan is set up to refresh it. Some suppliers only quote in one currency and will still settle with you in that currency, which means your own cost can move a little between the day you book and the day you pay. Your payment gateway also has its own settlement currency, and that is set by your bank and not by the software.

Because of that gap, most agencies keep a small cushion in the rate they use rather than copying the exact bank rate, so a small movement does not eat into their profit. You can usually set this once and leave it, and review it when rates have clearly shifted. Whether you can offer more than one currency to different groups of customers depends on your plan, so it is worth asking rather than assuming.

Have a look at the currency settings in your portal, confirm which currency each of your suppliers quotes and settles in, and check with your payment provider which currency your card payments will land in.