[G Waldron]

Where is best place to source them at best price.

[CraigB]

Mud flaps 2012-2015 i30-Elantra GT OEM Mud Flaps - Shark Racing and on ebay GD I30 MUD Flaps Genuine Hyundai MUD Flap SET Hatch Only 2012 Onward | eBay

Floor mats Two-Ply Clean Floor Mat Set - Shark Racing but you could get the genuine ones from Hyundai for less or even cheaper if you look on ebay Genuine Hyundai I30 2012 GD Model SET OF 4 Carpet Floor Mats Part AL200A6100 | eBay

[rustynutz]

Where is best place to source them at best price.

Assuming you are in Oz....eBay may be the go: 

Genuine Hyundai I30 Mudflaps GD Model | eBay
GD I30 Mats Genuine Hyundai Tailored Carpet MAT SET 2012 Onwards | eBay

[G Waldron]

Thanks will look into ebay options.

[beerman]

ebay rocks.

Though the set of 4 high sided rubber mats I got from Aldi has served me well for 5 years 135,000k, and all the crap stays within them....Only $20 too.....

[jay90]

I had to Buy Floor mats too because the dealer didn't include them..   
An OEM from eBay set me back about $100. to memory i did see they had 2 versions one with just 'i30' and the another with 'SR'

[eye30]

Cheap option is to buy off cut  or those square samples rom carpet shop and cut to shape.

You could have them edged to add a bit of personality to them...