How many web pages are on your existing site?
How many different languages do you want to reach?
Lets say you have ten pages, these can be copied and renamed then stored in a different folder or made into a sub-domain on your server, they can then have the language translated and replaced on them.
Say you want six different languages, the same process can be done another five times resulting in six new folders or sub-domains plus your original site which will have to have the index (home) page changed to link up the different language versions.
The copying and re-homing of the pages is fairly easy and straight forward, If they are on sub-domains the page re-linking would be minimal, however someone then has to translate the pages and retype them into the new language, images with text on them will have to be redone.
Add that up and it makes sixty pages that have to be translated and typed, divide 1,600 by 60 and your looking at £25 a page, probably not to bad if you have to pay a translator and some to type it all up.
If your site has only two pages and you only want it translated into two other languages then it is way too much! point being that you have to really look at what is involved, better still ask your web designer to go through it with you and break it down as above.