Certification on Linux

Hi. I was wondering what linux certifications are important among the people who hire for administrators. I am considering RHCE…Linux+….LPI certs.
RHCE is very pricey for the training, and testing, so is it worth it to go that route? The others are of no consequence price wise, but I wonder if it is even worth it for those? Do they hold any real value?
Any indepth comments and suggestions are appeciated. Thanks……….Pat