Basic International SEO is Not that Hard
Expanding your SEO efforts globally does not have to be prohibitively expensive or technically difficult. For example, you can make small changes as simple as explaining your primary product offering in another language can help. Say your site sells books written in English about Blue Widgets. If your entire site content is in English, your only non-English search traffic will be from users who conduct a search in English. However, if you translated your marketing content into Spanish, you can now draw in users who conduct their searches in Spanish. These users will still have to buy a book in English, but they will at least know that the book exists if they want it.
With just a few pages written in another language, your site can take a significant step towards acquiring a global audience. If you really want to take your global SEO efforts further, there is a lot more you are going to need to do, but just having new content is a great start.
There really are baby steps that can be taken towards international SEO without getting in over your head. You can have just a handful of your marketing pages translated into languages where you are already seeing visitors. There will be a bit of work that has to go into translating and optimizing for a new language, but you should see a significant return on your investment. Just remember: If you are going to try to internationalize you site and product, do your research and don’t make assumptions.