I am a translator with 28 years of experience. I frequently work translating html into Word, mainly for the site at www.mesoweb.com.
The price quoted above is the minimum the system at freelancer.com will accept. I charge by the word, at US$0.10 per word, based on the final word count. Typically, an English-into-Spanish target text is 20% larger (in word count) than the source text, but this is just a general principle and you will be charged as per the actual final word count.