Here is a list of replacement parts that would improve the drop saw:
Anything else for this list?
Blade guard: #290
The opaque thing that stop you sticking your hand into the blade without really wanting to
Release trigger: #339
The thing you need to press to allow the blade to lower/lock it at the top
Table Insert Left: #61
Table Insert Right: #62
These are the green things the blade goes down between
Left side fence: #51
Has a chunk off the top missing
Vise: #37
Sits in the left fence and holds own the work. This is a new thing not a replacement
Ref http://www.toolspareparts.com.au (AUD)
Blade guard: $42
May or may not be available depending on which ‘#290’ you reference
Release trigger: $33
Table Insert Left: $16
Table Insert Right: $16
Left side fence: $34
Vise: $36
Sub total: $177
GST: $17.7
Shipping ($10 if estimate holds true)
Grand total: AUD $204.7
Takes 5-10 business days for order picking then shipping is a couple of days?
http://www.ereplacementparts.com (USD)
Blade guard: $18.91
Release trigger: Dont have it 
Might be old parts guide or US model. IDK.
Table Insert Left: $3.99
Table Insert Right: $3.99
Left side fence: $26.46
Vise: $27.15
Sub total: $80.5
GST: Nope
Shipping $17.99 - 2-4 weeks + lead time of 1-2 weeks
Grand total: USD 98.49 -> @.75, AUD ~132
http://www.toolpartsdirect.com (USD)
Blade guard: $16.59
Release trigger: Dont have it Is in guide but no commensurate part in pick list.
Table Insert Left: $2.96
Table Insert Right: $2.96
Left side fence: $23.21
Vise: $23.82
Sub total: $69.54
GST: Nope
Shipping Cant seem to get shipping to go