We cannot think of the market values of each of them... Instead this is totally based on the individual's perception as well... There are companies, which pay attention to certificate-holders, while there are many, which don't even know if there are such certs...
It also depends on cert aspirant as well that you are enjoying having lots of certs... Some are enjoying listing a lot of certs in your signature looks impressive... but some think that it's radiculous...
We cannot still measure which certs are better than which ones... In general, IBM and BEA provide vendor-specific certs, while Sun provides vendor-independent certs... People usually do vendor-independent certs, then go for vendor-specific ones... That's just majority...
Hope it helps in answering your question...

Co-author of SCMAD Exam Guide, Author of JMADPlus
SCJP1.2, CCNA, SCWCD1.4, SCBCD1.3, SCMAD1.0, SCJA1.0, SCJP6.0