another option is get a big cheap table, maybe a fold up one so you can put it out of the way when you dont need it. then cut out a place to fit your machine perfectly. add a shelf underneath for your machine to sit on so the bed of the machine is flush with the table top and bobs your uncle. theres pix of this in action somewhere and from what i read its not that hard to do. probly cost ya no more than what you want and you'd have a whole table.
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shows the machine flush but has a big shelf.i was thinking using maybe perspex or wood and some U shaped brackets to attach it under a plain table top.i've been searching off and on all day and can not for the life of me find the pix. i'll check some more tomorrow and when i find it i'll post the link. off to eat dinner soon. jeanne