Well yea... "Also, the cost of Eurostar itself is not inconsiderable. There is a frequent traveller service that provides benefits, although not on price and there is no equivalent of a season ticket. Return tickets start at £59". Frankly I've rarely seen tickets under 150-200$. Doing this DAILY for a commute would add up, unless you're ridiculously wealthy (which I then suggest just getting a second home at your place of work for during the week).