I'm not sure why you are worried that you may be "too" frugal by spending seventy bucks on a birthday party for a 5 year old.
How much money represents to you a NON-"too" frugal fifth birthday party?
Surely there must be millions of youngsters who never have any birthday party at any restaurant during their entire childhood, much less at five years old -- I certainly know plenty of families who spend nowhere near fifty bucks for both the party - at home, AND the gift(s.)
I've read some articles over the past few years about parents dreading birthday parties, because it MUST be an event, and all the party bags are stuffed with party favors making these goodie bags exhorbitantly expensive.
I am very against this, what a terrible way to teach children what is really important in life, and instead encourage compulsive shopping for consumer driven wants & desires, what a silly way to live, like a robot and focusing upon the acquisition of material objects.
I have no idea why apparently so many young parents feel the need to overindulge and spoil their children.
M.Mist, AKA
"Scroooooge in Disguise" 