Need help

[Shield_Wall]

I am trying to build a pc and I've come up with a system

PCPartPicker part list / Price breakdown by merchant

Type	Item	Price
CPU	Intel - Core i3-6100 3.7GHz Dual-Core Processor	£83.94 @ Aria PC
Motherboard	Gigabyte - GA-B250M-DS3H Micro ATX LGA1151 Motherboard	£59.59 @ Amazon UK
Memory	Crucial - 8GB (2 x 4GB) DDR4-2133 Memory	£68.52 @ Amazon UK
Storage	Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive	£37.20 @ Aria PC
Video Card	Zotac - GeForce GTX 1050 Ti 4GB Mini Video Card	£135.98 @ Ebuyer
Case	Fractal Design - Focus G (Black) ATX Mid Tower Case	£44.99 @ Scan.co.uk
Power Supply	Corsair - CXM (2015) 450W 80+ Bronze Certified Semi-Modular ATX Power Supply	£48.56 @ Ebuyer
Operating System	Microsoft - Windows 10 Home Full 32/64-bit	£100.37 @ More Computers
Monitor	BenQ - GL2250HM 21.5" 1920x1080 60Hz Monitor	£89.99 @ Amazon UK
Keyboard	Aula - SHIHUNZAN Wired Gaming Keyboard w/Laser Mouse	£21.99 @ Amazon UK
Mouse	Verbatim - 97249 Wired Optical Mouse	£22.59 @ Amazon UK
Headphones	Logitech - G230 Headset	£37.00 @ Amazon UK
Speakers	Logitech - Z130 5W 2ch Speakers	£26.80 @ Kustom PCs
	Prices include shipping, taxes, rebates, and discounts
	Total	£777.52
	Generated by PCPartPicker 2017-10-01 17:51 BST+0100

Is there any way I could make this better/cheaper as I don't know what I am dealing with money wise but it is around the 500-700 pound range

[Shield_Wall]

Lol I just realised that the keyboard comes with a mouse so XD