Should you spend buying backlinks? No, you should not waste your time and money.
There are sites like x-changelinks which will provide you with the opportunity to write quality contents where you can insert your backlinks without paying a cent. Yes, it’s totally FREE.
It also is a good advertising platform as you can write about you with a link back to your website.
Here is the list of things that you can do to direct a link to your website;
Upload an image
Tell about yourself
Write an excerpt about your blog/article
Tell about your products
Tell about your products
Advertise your promotional contents
And tell about …
Of Course, it’s all FREE.