the best prices you're likely to find for bubble jet set are at
dharma trading company:
http://www.dharmatrading.com/html/eng/3446-AA.shtml
cj jenkings, the manufacturer. jenkins is the only place i've been able to find the special formula for HP printers.
http://www.cjenkinscompany.com/HP_Bu...set%202000.htm
softexpressions.com:
http://www.softexpressions.com/softw...ns/bubjet.html
they provide a link to FAQ about BJS.
you do not need to spend the extra $$$ on Bubble Jet Rinse. any super-mild detergent will do just as well. Woolite is often recommended in articles i've read.