For about a month now my RAV4 is having problems starting. At random times it will click once when I turn the key. Sometimes it starts on the 1st try, other times it takes 3, 4 or more times to engage the starter. I checked the battery myself and even took it to the local AutoZone to have the charging system checked out. The charging system checked fine. I'm thinking the starter is going bad. I checked on-line and they cost about $150. Does anybody have an idea before I plunk down the cash for a new starter?